diff --git a/boards/board.c b/boards/board.c
index 90afd59b..06ed9f0f 100644
--- a/boards/board.c
+++ b/boards/board.c
@@ -58,97 +58,3 @@ void check_failed(uint8_t *file, uint32_t line)
   (void) file;
   (void) line;
 }
-
-#if 0
-
-/**
- * HardFault_HandlerAsm:
- * Alternative Hard Fault handler to help debug the reason for a fault.
- * To use, edit the vector table to reference this function in the HardFault vector
- * This code is suitable for Cortex-M3 and Cortex-M0 cores
- */
-
-// Use the 'naked' attribute so that C stacking is not used.
-__attribute__((naked))
-void HardFault_HandlerAsm(void){
-  /*
-   * Get the appropriate stack pointer, depending on our mode,
-   * and use it as the parameter to the C handler. This function
-   * will never return
-   */
-
-  __asm(  ".syntax unified\n"
-      "MOVS   R0, #4  \n"
-      "MOV    R1, LR  \n"
-      "TST    R0, R1  \n"
-      "BEQ    _MSP    \n"
-      "MRS    R0, PSP \n"
-      "B      HardFault_HandlerC      \n"
-      "_MSP:  \n"
-      "MRS    R0, MSP \n"
-      "B      HardFault_HandlerC      \n"
-      ".syntax divided\n") ;
-}
-
-/**
- * HardFaultHandler_C:
- * This is called from the HardFault_HandlerAsm with a pointer the Fault stack
- * as the parameter. We can then read the values from the stack and place them
- * into local variables for ease of reading.
- * We then read the various Fault Status and Address Registers to help decode
- * cause of the fault.
- * The function ends with a BKPT instruction to force control back into the debugger
- */
-void HardFault_HandlerC(unsigned long *hardfault_args){
-  ATTR_UNUSED volatile unsigned long stacked_r0 ;
-  ATTR_UNUSED volatile unsigned long stacked_r1 ;
-  ATTR_UNUSED volatile unsigned long stacked_r2 ;
-  ATTR_UNUSED volatile unsigned long stacked_r3 ;
-  ATTR_UNUSED volatile unsigned long stacked_r12 ;
-  ATTR_UNUSED volatile unsigned long stacked_lr ;
-  ATTR_UNUSED volatile unsigned long stacked_pc ;
-  ATTR_UNUSED volatile unsigned long stacked_psr ;
-  ATTR_UNUSED volatile unsigned long _CFSR ;
-  ATTR_UNUSED volatile unsigned long _HFSR ;
-  ATTR_UNUSED volatile unsigned long _DFSR ;
-  ATTR_UNUSED volatile unsigned long _AFSR ;
-  ATTR_UNUSED volatile unsigned long _BFAR ;
-  ATTR_UNUSED volatile unsigned long _MMAR ;
-
-  stacked_r0  = ((unsigned long)hardfault_args[0]) ;
-  stacked_r1  = ((unsigned long)hardfault_args[1]) ;
-  stacked_r2  = ((unsigned long)hardfault_args[2]) ;
-  stacked_r3  = ((unsigned long)hardfault_args[3]) ;
-  stacked_r12 = ((unsigned long)hardfault_args[4]) ;
-  stacked_lr  = ((unsigned long)hardfault_args[5]) ;
-  stacked_pc  = ((unsigned long)hardfault_args[6]) ;
-  stacked_psr = ((unsigned long)hardfault_args[7]) ;
-
-  // Configurable Fault Status Register
-  // Consists of MMSR, BFSR and UFSR
-  _CFSR = (*((volatile unsigned long *)(0xE000ED28))) ;
-
-  // Hard Fault Status Register
-  _HFSR = (*((volatile unsigned long *)(0xE000ED2C))) ;
-
-  // Debug Fault Status Register
-  _DFSR = (*((volatile unsigned long *)(0xE000ED30))) ;
-
-  // Auxiliary Fault Status Register
-  _AFSR = (*((volatile unsigned long *)(0xE000ED3C))) ;
-
-  // Read the Fault Address Registers. These may not contain valid values.
-  // Check BFARVALID/MMARVALID to see if they are valid values
-  // MemManage Fault Address Register
-  _MMAR = (*((volatile unsigned long *)(0xE000ED34))) ;
-  // Bus Fault Address Register
-  _BFAR = (*((volatile unsigned long *)(0xE000ED38))) ;
-
-//  if ((CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk)==CoreDebug_DHCSR_C_DEBUGEN_Msk) /* if there is debugger connected */
-//  {
-//    __asm("BKPT #0\n");
-//  }
-
-  hal_debugger_breakpoint();
-}
-#endif
diff --git a/tinyusb/osal/osal_none.h b/tinyusb/osal/osal_none.h
index f81e8623..0d4bee1b 100644
--- a/tinyusb/osal/osal_none.h
+++ b/tinyusb/osal/osal_none.h
@@ -108,7 +108,6 @@ uint32_t tusb_tick_get(void);
 //--------------------------------------------------------------------+
 // SUBTASK (a sub function that uses OS blocking services & called by a task
 //--------------------------------------------------------------------+
-//------------- Sub Task -------------//
 #define OSAL_SUBTASK_INVOKED_AND_WAIT(subtask, status) \
     do {\
       state = __LINE__; case __LINE__:\
@@ -315,9 +314,6 @@ static inline void osal_queue_flush(osal_queue_handle_t const queue_hdl)
     }\
   }while(0)
 
-
-// queue_send, queue_receive
-
 #ifdef __cplusplus
  }
 #endif
diff --git a/tinyusb/tusb.h b/tinyusb/tusb.h
index 2630729b..38c02175 100644
--- a/tinyusb/tusb.h
+++ b/tinyusb/tusb.h
@@ -36,12 +36,6 @@
 */
 /**************************************************************************/
 
-/** \file
- *  \brief Tiny USB header
- *
- *  \note Tiny USB header Note
- */
-
 #ifndef _TUSB_H_
 #define _TUSB_H_